3984731 has 2 divisors, whose sum is σ = 3984732. Its totient is φ = 3984730.

The previous prime is 3984679. The next prime is 3984751. The reversal of 3984731 is 1374893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3984731 is a prime.

It is a super-2 number, since 2×3984731² = 31756162284722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3984691 and 3984700.

It is not a weakly prime, because it can be changed into another prime (3984751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992365 + 1992366.

It is an arithmetic number, because the mean of its divisors is an integer number (1992366).

Almost surely, 2^3984731 is an apocalyptic number.

3984731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3984731 is an equidigital number, since it uses as much as digits as its factorization.

3984731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 3984731 is about 1996.1791001811. The cubic root of 3984731 is about 158.5378640876.

The spelling of 3984731 in words is "three million, nine hundred eighty-four thousand, seven hundred thirty-one".